EP 0896765 A1 19990217 - SYSTEM AND METHOD FOR REDUCING AM-INTERFERENCE GENERATED BY A CDMA COMMUNICATIONS DEVICE
Title (en)
SYSTEM AND METHOD FOR REDUCING AM-INTERFERENCE GENERATED BY A CDMA COMMUNICATIONS DEVICE
Title (de)
SYSTEM UND VERFAHREN ZUM REDUZIEREN VON DURCH EIN CDMA-NACHRICHTENÜBERTRAGUNGSGERÄT ERZEUGTER AM-INTERFERENZ
Title (fr)
SYSTEME ET PROCEDE DE REDUCTION DES INTERFERENCES A MODULATION D'AMPLITUDE GENEREES PAR UN DISPOSITIF DE COMMUNICATIONS A ACCES MULTIPLE PAR DIFFERENCE DE CODE
Publication
Application
Priority
- US 9707174 W 19970428
- US 63957296 A 19960429
Abstract (en)
[origin: WO9741653A1] A system and method for reducing the interference experienced by sensitive electronic devices, such as hearing aids, operative in the vicinity of CDMA user communication devices (10). A transmitter (56) of the communications device (10) is configured to transmit signal power substantially continuously at a full rate power level irrespective of the variable data rate at which the transmitter (56) would otherwise be operative. In a first embodiment, a variable rate vocoder (16) within the transmitter is directed to perform full-rate vocoding, irrespective of an instantaneous level of user speech. In a second embodiment, a microprocessor (18) builds full-rate frames using repeated versions of code symbols generated by the vocoder (16). In a third embodiment, the microprocessor (18) builds full rate frames by generating signaling bits of a predetermined pattern to pad otherwise non-full frames.
IPC 1-7
IPC 8 full level
H04B 7/26 (2006.01); H04B 15/00 (2006.01)
CPC (source: EP KR US)
H04B 7/26 (2013.01 - KR); H04B 15/00 (2013.01 - EP KR US)
Citation (search report)
See references of WO 9741653A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9741653 A1 19971106; AT E316718 T1 20060215; AU 2928297 A 19971119; CA 2252808 A1 19971106; CN 1135754 C 20040121; CN 1223762 A 19990721; DE 69735164 D1 20060413; DE 69735164 T2 20061026; EP 0896765 A1 19990217; EP 0896765 B1 20060125; IL 126823 A0 19990817; IL 126823 A 20020725; JP 2000510667 A 20000815; JP 3923531 B2 20070606; KR 100493484 B1 20050725; KR 20000065096 A 20001106; TW 325613 B 19980121; US 6205190 B1 20010320; US 6714597 B1 20040330; ZA 973577 B 19981026
DOCDB simple family (application)
US 9707174 W 19970428; AT 97923491 T 19970428; AU 2928297 A 19970428; CA 2252808 A 19970428; CN 97195961 A 19970428; DE 69735164 T 19970428; EP 97923491 A 19970428; IL 12682397 A 19970428; JP 53916197 A 19970428; KR 19980708685 A 19981029; TW 86107694 A 19970604; US 63957296 A 19960429; US 65417900 A 20000901; ZA 973577 A 19970424